问题
解答题
|
答案
(1)5x-
=5 6
,5 4
5x-
+5 6
=5 6
+5 4
,5 6
5x=
,25 12
5x÷5=
÷5,25 12
x=
;5 12
(2)x+
=240,x 5
x=240,6 5
x÷6 5
=240÷6 5
,6 5
x=200.
|
(1)5x-
=5 6
,5 4
5x-
+5 6
=5 6
+5 4
,5 6
5x=
,25 12
5x÷5=
÷5,25 12
x=
;5 12
(2)x+
=240,x 5
x=240,6 5
x÷6 5
=240÷6 5
,6 5
x=200.